Charlotte Pipe 4-in x 5-ft PVC DWV Foam Core Pipe in the PVC DWV Pipe & Fittings department at Lowes.com
Amazon.com: 2pcs PVC Pipe Y-Type Connector PVC 3 Way Joints Water Pipe Tee Connectors Aquarium Fish Tank Water Supply Pipe Fittings - (Color: White, Size: I.D 40mm) : Pet Supplies